// license:BSD-3-Clause
// copyright-holders:Sandro Ronco
/***************************************************************************
Amstrad PenPad PDA 600
05/11/2009 Skeleton driver.
Hardware info:
U1: CPU
Z8S180
Enhanced Z80 CPU
1 MB MMU
2 DMAs
2 UARTs (up to 512 Kbps)
Two 16-Bit Timers
Clock Serial I/O
U2: ROM
contains OS (binary and disassembled source)
apparently compatible to 27C1001 (128K*8)
U3: RAM
128K RAM, static
U4: RTC
U5: Amstrad ASIC (unknown functionality )
U6, U7, U8, U9: Multiplexer
quad channel dual multiplexer
U11: RAM
32K RAM, static
U12: LCD Controller
U21: 5V StepUp converter voltage converter
U27: OA quad operational amplifier
U30: RS232 Driver
U31: Amstrad ASIC
U32: FlipFlop Octal D-Flip-Flop
U33: RAM
32K RAM, static
U35: Tone Dialer
generates DTMF frequencies
U36: unknown
U37: Nand
Dual Quad-Input Nand
U43: Bus Buffer
Octal Bus Buffer
Connectors:
LCD
Digitizer
Serial
PCMCIA
Additional info:
Two Z8 for power management and character recognition
****************************************************************************/
#include "emu.h"
#include "cpu/z180/z180.h"
#include "machine/nvram.h"
#include "machine/hd64610.h"
#include "rendlay.h"
#include "screen.h"
class pda600_state : public driver_device
{
public:
pda600_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu")
{}
required_device<cpu_device> m_maincpu;
virtual void video_start() override;
virtual void machine_reset() override;
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
uint8_t * m_video_ram;
void pda600(machine_config &config);
void pda600_io(address_map &map);
void pda600_mem(address_map &map);
};
void pda600_state::pda600_mem(address_map &map)
{
map.unmap_value_high();
map(0x00000, 0x1ffff).rom();
//AM_RANGE(0x20000, 0x9ffff) AM_RAM // PCMCIA Card
map(0xa0000, 0xa7fff).ram().region("videoram", 0);
map(0xe0000, 0xfffff).ram().region("mainram", 0).share("nvram");
}
void pda600_state::pda600_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
map(0x00, 0x3f).noprw(); /* Z180 internal registers */
//AM_RANGE(0x40, 0x7f) AM_NOP /* Z180 internal registers */
map(0x80, 0x8f).rw("rtc", FUNC(hd64610_device::read), FUNC(hd64610_device::write));
//AM_RANGE(0xC0, 0xC1) AM_NOP /* LCD */
}
/* Input ports */
static INPUT_PORTS_START( pda600 )
INPUT_PORTS_END
void pda600_state::machine_reset()
{
// the PDA600 soon after start waits for something from the Z180 CSIO, I do not know exactly for what
// the CSIO is used and for now I forced the CNTR End-Flag bit to 1 for allow the emulation to continue.
m_maincpu->set_state_int(Z180_CNTR, m_maincpu->state_int(Z180_CNTR) | 0x80);
}
void pda600_state::video_start()
{
m_video_ram = memregion("videoram")->base();
}
uint32_t pda600_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
for (int y=0; y<320; y++)
for (int x=0; x<30; x++)
{
uint8_t data = m_video_ram[y*30 + x];
for (int px=0; px<8; px++)
{
bitmap.pix16(y, (x * 8) + px) = BIT(data, 7);
data <<= 1;
}
}
return 0;
}
static const gfx_layout pda600_charlayout_8 =
{
8, 8,
49,
1,
{ 0 },
{ 0,1,2,3,4,5,6,7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
8*8
};
static const gfx_layout pda600_charlayout_13 =
{
8, 13,
123,
1,
{ 0 },
{ 0,1,2,3,4,5,6,7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 8*9, 8*10, 8*11, 8*12 },
8*13
};
static const gfx_layout pda600_charlayout_13a =
{
8, 13,
132,
1,
{ 0 },
{ 0,1,2,3,4,5,6,7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 8*9, 8*10, 8*11, 8*12 },
8*13
};
static const gfx_layout pda600_charlayout_19 =
{
8, 19,
32,
1,
{ 0 },
{ 0,1,2,3,4,5,6,7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 8*9, 8*10, 8*11, 8*12, 8*13, 8*14, 8*15, 8*16, 8*17, 8*18 },
8*19
};
static const gfx_layout pda600_charlayout_19a =
{
8, 19,
11,
1,
{ 0 },
{ 0,1,2,3,4,5,6,7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 8*9, 8*10, 8*11, 8*12, 8*13, 8*14, 8*15, 8*16, 8*17, 8*18 },
8*19
};
static GFXDECODE_START( gfx_pda600 )
GFXDECODE_ENTRY( "maincpu", 0x45cd, pda600_charlayout_19, 0, 1 )
GFXDECODE_ENTRY( "maincpu", 0x4892, pda600_charlayout_19a, 0, 1 )
GFXDECODE_ENTRY( "maincpu", 0x4d73, pda600_charlayout_8, 0, 1 )
GFXDECODE_ENTRY( "maincpu", 0x5b8f, pda600_charlayout_13, 0, 1 )
GFXDECODE_ENTRY( "maincpu", 0x61d3, pda600_charlayout_13a, 0, 1 )
GFXDECODE_END
MACHINE_CONFIG_START(pda600_state::pda600)
/* basic machine hardware */
MCFG_DEVICE_ADD("maincpu",Z180, XTAL(14'318'181))
MCFG_DEVICE_PROGRAM_MAP(pda600_mem)
MCFG_DEVICE_IO_MAP(pda600_io)
/* video hardware */
MCFG_SCREEN_ADD("screen", LCD)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(240, 320)
MCFG_SCREEN_VISIBLE_AREA(0, 240-1, 0, 320-1)
MCFG_SCREEN_UPDATE_DRIVER( pda600_state, screen_update )
MCFG_SCREEN_PALETTE("palette")
MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_pda600)
MCFG_DEFAULT_LAYOUT(layout_lcd)
MCFG_PALETTE_ADD_MONOCHROME("palette")
// NVRAM needs to be filled with random data to fail the checksum and be initialized correctly
MCFG_NVRAM_ADD_RANDOM_FILL("nvram")
MCFG_DEVICE_ADD("rtc", HD64610, XTAL(32'768))
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( pda600 )
ROM_REGION( 0x20000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "pdarom.bin", 0x00000, 0x20000, CRC(f793a6c5) SHA1(ab14b0fdcedb927c66357368a2bfff605ba758fb))
// 128KB RAM
ROM_REGION( 0x20000, "mainram", ROMREGION_ERASE )
// 32KB Video RAM
ROM_REGION( 0x8000, "videoram", ROMREGION_ERASE )
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP( 1993, pda600, 0, 0, pda600, pda600, pda600_state, empty_init, "Amstrad plc", "PenPad PDA 600", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)